Various types of off-road or general construction machine such as wheel loaders are often required to travel on roads between job sites. Without suspension, tyre is the only elastic element acting between the vehicle and the ground but the suspension and damping properties of the tires cannot meet the demands for fast, safe and comfortable road transportation. In this paper, taking wheel loader as research object, we established a dynamic model for the basic machine of wheel loader with coupling vibration damping system with ADAMS software through multisystem dynamics theory method. Vibration damping effect of the coupling vibration damping system on the basic machine smoothness under random pavement excitation was verified through a simulation analysis, which significantly improved the travel smoothness of loaders so that not only material spillage was reduced but also drive comfort was increased. The influence of value selections of various structure parameters in damping system on vibration performance was discussed. Conclusions obtained provide reference for the development design of high speed construction vehicles.%为有效解决刚性或半刚性悬架工程车辆行驶过程中驾驶舒适性差、振动噪声污染严重等问题,以轮式装载机为研究对象,在建立具有行驶稳定系统的装载机ADAMS整机动力学模型基础上,应用路面随机激励的方法,分析行驶稳定系统中蓄能器初始充气压力、额定容积及节流阀水力直径等主要结构参数对整机行驶平顺性的影响,掌握了不同行驶工况下各参数对减振性能的影响规律.该研究结果为高速工程车辆行驶稳定系统的设计提供了依据.
展开▼
